I bought the GMQ PRO frame when I bought the Bailey Home quilter, The speed control came with the combo.
I don't have any desire for the stitch control. I am not making the kinds of quilts that will be entered in shows and judged. My quilts are donated to a charity that delivers aid to disaster areas around the world. I am sure the people who get my quilts are not going to be inspecting them for even or uniform stitches. The money I would have spent for this item, is well spent on batting. I have lots of fabrics and scraps given to me and I use sheets for backing, so my job is simple.
For those who make quilts for their families to keep as future heirlooms, I think this would be a nice feature to own.
I hope others will share their experiences with you in this area.
June